JobsChicago Trading Company

C++ Engineering Lead – Delta Force

Chicago Trading Company · Chicago, IL · Technology

Posted Sep 11, 2026 · We last checked this listing on Sep 20, 2026

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Likely interview questions for this role

Written from this job description, not a generic list. Each one notes what the interviewer is really checking.

Behavioral

Tell me about a time you had to design a multithreaded or distributed system where correctness under concurrency was hard to get right. What went wrong before it went right?

practical experience with concurrency bugs and whether they learn from failure or just avoid the topic

Tell me about a production issue you had to triage quickly. How did you figure out what was wrong, and how did you decide when it was safe to call it resolved versus just patched?

troubleshooting process and judgment about operational safety versus quick fixes

Tell me about someone you mentored or managed. What did you actually change about how they worked, and how do you know it helped?

real management substance versus a title without practiced mentoring skill

Tell me about a time you disagreed with a quant or trader on a technical design decision. How did that get resolved?

ability to hold ground technically while still collaborating well with non-engineers

Tell me about a time you had to make an architectural decision that you knew would be unpopular with part of the team. How did you handle it?

decisiveness and how they manage team buy-in when leading technical direction

Technical

Walk me through a low-latency C++ system you built or maintained. Where were the actual bottlenecks, and how did you find them?

whether the candidate has real hands-on experience with performance work versus surface-level familiarity

How do you think about hardware and software co-design when you're trying to shave microseconds off a trading path?

depth of low-level systems knowledge and comfort reasoning across the stack, not just at the code level

What's your experience with networking protocols relevant to trading systems, and where have you had to reason about them at a low level, not just use a library?

whether their networking knowledge goes below the API level as the posting requires

Delta trading is described here as moving from pure risk management toward an alpha-generating strategy tied to volatility trading. What does that shift mean for how you'd design the systems underneath it?

whether the candidate understood the business context in the posting and can connect architecture choices to strategy goals

Describe how you'd structure code review and testing standards for a small team to keep quality high without slowing everyone down.

practical engineering leadership habits versus abstract best-practices talk

Situational

Say you're deep into building a valuation system for delta trading and a trader tells you the priorities just shifted because of a market opportunity. How do you decide what gets dropped or delayed?

ability to triage and reprioritize under real business pressure without losing engineering discipline

How would you explain the tradeoff between a quick, ad hoc fix and a properly architected solution to a trader who just wants the problem gone right now?

communication skill and whether they can hold an engineering standard under commercial pressure

You've got two or three projects going at once with engineers assigned across them. How do you keep track of what's slipping before it becomes a problem?

concrete project management habits versus vague claims of multitasking ability

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The full job description

As published by Chicago Trading Company.

<div class="content-intro"><p>Chicago Trading Company (CTC) is a premier proprietary trading firm specializing in options market making. &nbsp;Our collaborative culture fuels innovation in quantitative research, systematic trading strategies, and cutting-edge trading technology. &nbsp;For over three decades CTC has provided critical liquidity across derivatives exchanges worldwide - making them fairer, more transparent, and more efficient.</p> <p>We strive to be the most innovative firm in the industry today, tomorrow, and long into the future while upholding ethical excellence. We believe that CTC makes a positive impact on the markets, the lives of our employees, and all the communities to which we belong. Started in 1995 by a team of forward-thinking Traders, we are proud to call ourselves an industry leader that keeps making markets and each other better.</p></div><p>The Delta Force team is looking for a Team Lead to own business-critical technical initiatives and manage a team of engineers within the delta trading execution group. You'll be a hands-on manager developing and maintaining high-performance valuation, execution, and post-trade systems. Working closely with Traders, Quants, and Technologists, you'll help drive the evolution of delta trading from a risk management function into a true alpha-generating strategy — integrating delta trading with volatility trading to capitalize on increased liquidity and tighter spreads. By mentoring your team, managing cross-functional projects, and upholding the highest standards of software engineering, you'll play a pivotal role in ensuring our delta trading infrastructure remains fast, efficient, and competitive.<br><br><strong>What You'll Do</strong><br><strong>Technical Leadership &amp; Development</strong></p> <ul> <li>Design and build high-performance delta one trading systems</li> <li>Lead technical design discussions and drive architectural decisions</li> <li>Work closely with traders, quants, and technologists to drive ideas from inception to production in a timely and robust manner</li> <li>Ensure operational safety and uphold the highest standards of software engineering by thoroughly testing code, following a coherent and maintainable design and architecture, and adhering to best practices — prioritizing carefully planned, well-structured solutions over ad hoc implementations</li> </ul> <p><strong>People &amp; Project Management</strong></p> <ul> <li>&nbsp;Lead and mentor a small team of engineers, supporting their professional growth and day-to-day technical work</li> <li>Manage multiple concurrent projects, ensuring timely delivery while maintaining quality and reliability</li> <li>Help establish team priorities in alignment with broader business and trading objectives</li> <li>Foster a collaborative, high-performance team culture consistent with CTC's values</li> </ul> <p><br><br><strong>What We're Looking For</strong><br><strong>Required</strong></p> <ul> <li>A minimum of 5 years of experience working in a production environment using modern C++</li> <li>Demonstrated experience developing and maintaining large-scale C++ systems</li> <li>Deep knowledge of low-level systems programming, optimization, and hardware/software co-design</li> <li>Strong fundamentals in computer architecture and networking protocols</li> <li>Experience writing multithreaded and distributed systems with an affinity for delivering clean, performant code</li> <li>Proven ability to manage multiple projects simultaneously, balancing competing priorities without sacrificing quality</li> <li>Ability to quickly triage issues and drive the resolution effort through completion</li> </ul> <p><strong>Preferred</strong></p> <ul> <li>Experience managing or mentoring engineers (2–4 people), with a passion for developing talent and building strong teams</li> <li>Experience working in the trading industry</li> </ul><div class="content-pay-transparency"><div class="pay-input"><div class="description"><p><strong>Compensation</strong></p> <p>The salary range for this role is listed below. This role is also eligible for an annual discretionary bonus. The discretionary bonus will be dependent upon the individual’s skills, experience, qualifications, and firm performance.&nbsp;</p></div><div class="title">Salary Range</div><div class="pay-range"><span>$225,000</span><span class="divider">&mdash;</span><span>$250,000 USD</span></div></div></div><div class="content-conclusion"><p>Most teams at CTC, with the exception of Trading, follow a hybrid workplace model, subject to change based on business need.</p> <p><strong>Our Benefits&nbsp;</strong></p> <p>We strongly believe in the well-being of our employees and their families so we offer outstanding benefits to support you both professionally and personally. These benefits include generous time off, insurance coverage, paid parental leave, free breakfast and lunch (plus healthy snacks, of course), wellness reimbursement, and a variety of other benefits focused on providing the best employee experience.&nbsp;</p> <p><em>(Disclaimer: interns and contractors are not eligible for benefits at CTC)&nbsp;</em></p> <p><strong>Our Commitment to Diversity, Equity and Inclusion</strong></p> <p>At CTC, we aim to cultivate a workplace that celebrates diversity and each person feels included, engaged and empowered. Where each of us feels we belong. We are committed to having a diverse workforce and are proud to be an equal opportunity employer. CTC does not discriminate on the basis of race, religion, color, national origin, sex, gender, gender expression, sexual orientation, age, marital status, veteran status, or disability status. We will ensure that individuals with disabilities are provided reasonable accommodation to participate in the job application or interview process, to perform crucial job functions, and to receive other benefits and privileges of employment.&nbsp;</p> <p>If you have a disability and believe you need a reasonable accommodation in order to search for a job opening or to apply for a position, please contact us at info@chicagotrading.com. Note that emails sent to this email account for non-disability related issues, such as following up on an application, will not receive a response.</p> <p><strong>Use of Artificial Intelligence (AI)</strong></p> <p>Information submitted by job applicants may be subject to review and analysis by automated systems, including Artificial Intelligence (AI), as part of the recruitment process. Such systems are utilized to enhance the efficiency and effectiveness of our hiring procedures. Applicants are advised that any information provided may be evaluated by AI tools to ensure an equitable and thorough assessment.</p></div>

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